Sunseeker Robot Lawnmowers Error Codes

E01

Robot mower will not start; display shows E01 immediately after power-on

Main Power Supply / Battery Protection Fault

E02

Robot mower stops and displays E02 shortly after leaving the charging station

Charging Station / Dock Communication Fault

E03

Robot mower displays E03 and will not start mowing cycle

Boundary Wire Signal Not Detected

E04

Robot mower shows E04 and stops as soon as the blade motor tries to start

Blade Motor Overload / Stall

E05

Robot mower displays E05 and stops moving, even though the blade still spins

Drive Motor Overcurrent / Wheel Jam

E06

Robot mower shows E06 and refuses to start; often occurs on slopes or uneven ground

Tilt Sensor / Roll-Over Protection Fault

E07

Robot mower displays E07 and stops; often after bumping into obstacles

Lift Sensor / Lifted Mower Detected

E08

Robot mower shows E08 and stops near the boundary wire or charging station

Boundary Signal Interference / Out of Working Area

E09

Robot mower displays E09 and will not charge on the station

Charging Current Fault / Battery Not Charging

E10

Robot mower shows E10 and stops randomly during operation

Temperature Sensor / Overheat Protection Fault

E11

Robot mower displays E11 and refuses to start; often after firmware update or long storage

Main Control Board Communication Error

E12

Robot mower shows E12 and stops near obstacles; bumper seems unresponsive or always triggered

Front Bumper / Collision Sensor Fault

E13

Robot mower displays E13 and stops when reversing or turning

Wheel Encoder / Speed Sensor Fault

E14

Robot mower shows E14 and cannot find or follow the guide wire back to the station

Guide Wire Signal Fault

E15

Robot mower displays E15 and stops when it encounters wet or muddy areas

Wheel Slip / Traction Loss Detected

E16

Robot mower shows E16 and stops with the message related to "Rain" or "Weather"

Rain Sensor Fault

E17

Robot mower displays E17 and cannot connect to the mobile app or Wi‑Fi

Wireless Communication Module Fault

E18

Robot mower shows E18 and stops with a message about "Time" or "Clock"

Real-Time Clock / Scheduler Fault

E19

Robot mower displays E19 and stops with a message about "PIN" or "Security"

Security Lock / PIN Code Error

E20

Robot mower shows E20 and stops with a message about "Obstacle" even when nothing is nearby

Ultrasonic / Obstacle Sensor Fault (if equipped)

Symptom

Robot mower cannot be paired with the remote control or app, but no specific error code is shown

Pairing / Connectivity Issue

Symptom

Robot mower chassis shows signs of cracking or deformation, affecting operation

Structural Chassis Damage

Symptom

Robot mower cuts unevenly, leaving scalped spots and tall patches

Cutting Height Misadjustment / Deck Leveling Issue

Symptom

Robot mower display is blank or very dim, but the mower still seems to operate

Display / HMI Backlight Failure

Symptom

Robot mower does not detect rain and continues mowing in wet conditions

Rain Sensor Non-Response

Symptom

Robot mower does not return to the charging station and stops with low battery in the yard

Homing / Return-to-Base Failure

Symptom

Robot mower does not start at scheduled times but works when started manually

Scheduling / Timer Misconfiguration

Symptom

Robot mower emits a burning smell or excessive heat from the underside

Overheating Motor or Wiring

Symptom

Robot mower frequently gets stuck on small bumps, roots, or edges

Chassis Ground Clearance / Terrain Handling Issue

Symptom

Robot mower is difficult to push manually; wheels feel locked when power is off

Drive Gearbox Binding

Symptom

Robot mower is very noisy while cutting, with rattling or grinding sounds

Blade System Mechanical Noise

Symptom

Robot mower leaves streaks of uncut grass between passes

Dull or Damaged Blades

Symptom

Robot mower leaves tracks or scalps the lawn on slopes

Inappropriate Operation on Steep Slopes

Symptom

Robot mower leaves uncut patches and misses areas of the lawn

Inefficient Navigation / Coverage Pattern Issue

Symptom

Robot mower occasionally runs outside the defined lawn area

Boundary Containment Failure

Symptom

Robot mower occasionally shuts down completely in the middle of the lawn with no error code

Intermittent Power Loss

Symptom

Robot mower runs for a very short time before needing to recharge

Reduced Battery Capacity

Symptom

Robot mower vibrates excessively during operation

Imbalanced Cutting System